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Use lazy umount to avoid race problems with dev

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A problem with unmounting the dev filesystem in Ubuntu images caused
the umount of the /dev bind mount to fail, which left it there to be
removed during the mv -t step, causing the build host's /dev to be
wiped out.

The lazy umount will detach it from the filesystem hierarchy and then
clean up the mount reference later.

Change-Id: I8f8cea857c445fb0b4fd02bc063722fb1553c947
This commit is contained in:
Clint Byrum 2013-09-18 14:09:24 -07:00
parent b50dbb0571
commit e29cc0c10c
1 changed files with 1 additions and 1 deletions
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2
lib/img-functions
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@ -25,7 +25,7 @@ function unmount_image () {
local MOUNTS local MOUNTS
MOUNTS=$(grep < /proc/mounts " $TMP_BUILD_DIR/mnt" | awk '{ print $2 }' | sort -r) MOUNTS=$(grep < /proc/mounts " $TMP_BUILD_DIR/mnt" | awk '{ print $2 }' | sort -r)
for M in $MOUNTS; do for M in $MOUNTS; do
sudo umount -f $M || true sudo umount -fl $M || true
done done
if [ -n "$EXTRA_UNMOUNT" ]; then if [ -n "$EXTRA_UNMOUNT" ]; then
$EXTRA_UNMOUNT $EXTRA_UNMOUNT